Home / 20,516.15-30,774.23-11,744.89

Finding the Fourth Proportional to 20,516.15, 30,774.23 and 11,744.89

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Solution

The fourth proportional to 20,516.15, 30,774.23 and 11,744.89 is: 17,617.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.15 : 30,774.23 = 11,744.89 : x
  2. Step 2: Convert to fraction form
    20,516.15/30,774.23 = 11,744.89/x
  3. Step 3: Cross multiply
    20,516.15x = 30,774.23 × 11,744.89
  4. Step 4: Simplify right side
    20,516.15x = 361,439,946.18
  5. Step 5: Solve for x
    x = 361,439,946.18/20,516.15
  6. Step 6: Final answer
    x = 17,617.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.